using afPlastic::SrcCodeErrusing afPlastic::SrcCodeSnippet** Indicates a 'Mustache' parsing Err; the stack trace trace contains a code snippet of where the ** Err occurred.constclass MoustacheErr : Err, SrcCodeErr {constoverride SrcCodeSnippet srcCodeconstoverride Int errLineNoprivateconst Int linesOfPaddinginternalnew make(SrcCodeSnippet srcCode, Int errLineNo, Str errMsg, Int linesOfPadding) : super(errMsg){this.srcCode = srcCodethis.errLineNo = errLineNothis.linesOfPadding = linesOfPadding}override Str toStr(){ print(msg, linesOfPadding)}}