question: private void convertEscapedFunction ( final StringBuilder target , final CharSequence escapedFunction ) throws FBSQLParseException { final String templateResult = FBEscapedFunctionHelper . convertTemplate ( escapedFunction . toString ( ) , mode ) ; target . append ( templateResult != null ? templateResult : escapedFunction ) ; }
target:  This method converts escaped function to a server function call. Actually we do not change anything here, we hope that all UDF are defined.