public static MemberDeclarationSyntax NumberTryParseSpanSyntax(this PrimitiveDescriptor descriptor) => descriptor.NumberTryParseSyntax(ReadOnlySpanChar);
public static MemberDeclarationSyntax NumberTryParseStringSyntax(this PrimitiveDescriptor descriptor) => descriptor.NumberTryParseSyntax(PredefinedType(Token(SyntaxKind.StringKeyword)));