[java] Program
     [java]   DeclarationList 
     [java]     MethodDeclaration func void
     [java]       StatementBlock 
     [java]         StatementList 
     [java]           ExpressionStatement 
     [java]             MethodCall print
     [java]               ArgumentList
     [java]                 NullaryExpression "if"
     [java]           IfStatement 
     [java]             NullaryExpression true
     [java]             StatementBlock 
     [java]               StatementList 
     [java]                 ExpressionStatement 
     [java]                   MethodCall print
     [java]                     ArgumentList
     [java]                       NullaryExpression "true"
     [java]           ExpressionStatement 
     [java]             MethodCall print
     [java]               ArgumentList
     [java]                 NullaryExpression "end"
     [java]   StatementBlock 
     [java]     StatementList 
     [java]       ExpressionStatement 
     [java]         MethodCall func


def func(): void
    print("if")
    if(true)
    print("true")
    end
    print("end")
end

func()