NamespaceDecl constructor
      
      NamespaceDecl(})
     
    
    
Implementation
NamespaceDecl(
  this.id,
  this.definition, {
  this.classId,
  this.isPrivate = false,
  this.isTopLevel = false,
  super.source,
  super.line = 0,
  super.column = 0,
  super.offset = 0,
  super.length = 0,
}) : super(Semantic.namespaceDeclaration);