Replace `ifNil:[...]` with `isNil ifTrue:[...]`
The latter is optimized by compilers and therefore faster.
"{ Package: 'stx:goodies/petitparser/parsers/java' }"
"{ NameSpace: Smalltalk }"
PJExpressionNode subclass:#PJCharacterLiteralNode
instanceVariableNames:'literalValue'
classVariableNames:''
poolDictionaries:''
category:'PetitJava-AST'
!
!PJCharacterLiteralNode class methodsFor:'as yet unclassified'!
literalValue: aString
^(self new) literalValue: aString
! !
!PJCharacterLiteralNode methodsFor:'as yet unclassified'!
acceptVisitor: aVisitor
^ aVisitor visitCharacterLiteralNode: self
!
literalValue
^ literalValue
!
literalValue: anObject
literalValue := anObject
! !