Replace `ifNil:[...]` with `isNil ifTrue:[...]`
The latter is optimized by compilers and therefore faster.
"{ Package: 'stx:goodies/petitparser/parsers/java' }"
"{ NameSpace: Smalltalk }"
PJASTNode subclass:#PJPackageDeclarationNode
instanceVariableNames:'nameNode'
classVariableNames:''
poolDictionaries:''
category:'PetitJava-AST'
!
!PJPackageDeclarationNode methodsFor:'accessing'!
nameNode
^ nameNode
!
nameNode: anObject
nameNode := anObject
! !
!PJPackageDeclarationNode methodsFor:'visiting'!
acceptVisitor: aVisitor
aVisitor visitPackageDeclarationNode: self
! !
!PJPackageDeclarationNode class methodsFor:'documentation'!
version_HG
^ '$Changeset: <not expanded> $'
! !