Problems reported:

parser/error_recovery/issue_46736:1:18: 'default' can't be used as an identifier because it's a keyword.
void test(String default) { }
                 ^^^^^^^

beginCompilationUnit(void)
  beginMetadataStar(void)
  endMetadataStar(0)
  beginTopLevelMember(void)
    beginTopLevelMethod(, null)
      handleVoidKeyword(void)
      handleIdentifier(test, topLevelFunctionDeclaration)
      handleNoTypeVariables(()
      beginFormalParameters((, MemberKind.TopLevelMethod)
        beginMetadataStar(String)
        endMetadataStar(0)
        beginFormalParameter(String, MemberKind.TopLevelMethod, null, null, null)
          handleIdentifier(String, typeReference)
          handleNoTypeArguments(default)
          handleType(String, null)
          handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'default' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: default}], default, default)
          handleIdentifier(default, formalParameterDeclaration)
          handleFormalParameterWithoutValue())
        endFormalParameter(null, null, null, default, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
      endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
      handleAsyncModifier(null, null)
      beginBlockFunctionBody({)
      endBlockFunctionBody(0, {, })
    endTopLevelMethod(void, null, })
  endTopLevelDeclaration()
endCompilationUnit(1, )