compilation_unit {
  package_statement {
    package_name: "ExplorerTest"
  }
  is_api: true
  declarations {
    interface {
      name {
        name: "HasAssoc"
      }
      members {
        let {
          pattern {
            generic_binding {
              name: "Assoc"
              type {
                type_type_literal {
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    class_declaration {
      name {
        name: "X"
      }
      members {
        impl {
          kind: ExternalImpl
          impl_type {
            identifier {
              name: "Self"
            }
          }
          interface {
            where {
              base {
                identifier {
                  name: "HasAssoc"
                }
              }
              clauses {
                rewrite {
                  member_name: "Assoc"
                  replacement {
                    int_type_literal {
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "H"
      }
      deduced_parameters {
        name: "T"
        type {
          where {
            base {
              identifier {
                name: "HasAssoc"
              }
            }
            clauses {
              rewrite {
                member_name: "Assoc"
                replacement {
                  int_type_literal {
                  }
                }
              }
            }
          }
        }
      }
      deduced_parameters {
        name: "U"
        type {
          where {
            base {
              type_type_literal {
              }
            }
            clauses {
              equals {
                lhs {
                  designator {
                    name: "Self"
                  }
                }
                rhs {
                  int_type_literal {
                  }
                }
              }
            }
          }
        }
      }
      param_pattern {
        fields {
          binding_pattern {
            name: "a"
            type {
              expression_pattern {
                expression {
                  identifier {
                    name: "T"
                  }
                }
              }
            }
          }
        }
        fields {
          binding_pattern {
            name: "b"
            type {
              expression_pattern {
                expression {
                  identifier {
                    name: "U"
                  }
                }
              }
            }
          }
        }
      }
      return_term {
        kind: Expression
        type {
          int_type_literal {
          }
        }
      }
      body {
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "a"
                type {
                  expression_pattern {
                    expression {
                      compound_member_access {
                        object {
                          identifier {
                            name: "T"
                          }
                        }
                        path {
                          simple_member_access {
                            field: "Assoc"
                            object {
                              where {
                                base {
                                  identifier {
                                    name: "HasAssoc"
                                  }
                                }
                                clauses {
                                  rewrite {
                                    member_name: "Assoc"
                                    replacement {
                                      identifier {
                                        name: "U"
                                      }
                                    }
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
            init {
              int_literal {
                value: 3
              }
            }
            is_returned: false
          }
        }
        statements {
          return_expression_statement {
            expression {
              identifier {
                name: "a"
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "Main"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          int_type_literal {
          }
        }
      }
      body {
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "x"
                type {
                  expression_pattern {
                    expression {
                      identifier {
                        name: "X"
                      }
                    }
                  }
                }
              }
            }
            init {
              struct_literal {
              }
            }
            is_returned: false
          }
        }
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "y"
                type {
                  expression_pattern {
                    expression {
                      int_type_literal {
                      }
                    }
                  }
                }
              }
            }
            init {
              int_literal {
                value: 0
              }
            }
            is_returned: false
          }
        }
        statements {
          return_expression_statement {
            expression {
              call {
                function {
                  identifier {
                    name: "H"
                  }
                }
                argument {
                  tuple_literal {
                    fields {
                      identifier {
                        name: "x"
                      }
                    }
                    fields {
                      identifier {
                        name: "y"
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}