compilation_unit {
  package_statement {
    package_name: "ExplorerTest"
  }
  is_api: true
  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 {
                      call {
                        function {
                          identifier {
                            name: "Optional"
                          }
                        }
                        argument {
                          tuple_literal {
                            fields {
                              string_type_literal {
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
            init {
              call {
                function {
                  simple_member_access {
                    field: "CreateEmpty"
                    object {
                      call {
                        function {
                          identifier {
                            name: "Optional"
                          }
                        }
                        argument {
                          tuple_literal {
                            fields {
                              string_type_literal {
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
            is_returned: false
          }
        }
        statements {
          if_statement {
            condition {
              call {
                function {
                  simple_member_access {
                    field: "HasValue"
                    object {
                      identifier {
                        name: "x"
                      }
                    }
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
            then_block {
              statements {
                return_expression_statement {
                  expression {
                    operator {
                      op: Neg
                      arguments {
                        int_literal {
                          value: 1
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
        statements {
          return_expression_statement {
            expression {
              int_literal {
                value: 0
              }
            }
          }
        }
      }
    }
  }
}
