public static PseudoFunction < ? > lookupPseudoFunction ( final String pseudoFunctionName ) { PseudoFunction pseudoFunction = PSEUDO_FUNCTION_MAP . get ( pseudoFunctionName ) ; if ( pseudoFunction == null ) { throw new CSSellyException ( "Unsupported pseudo function: " + pseudoFunctionName ) ; } return pseudoFunction ; }
Lookups pseudo function for given pseudo function name .