class YARP::WhileNode

def initialize(keyword_loc, predicate, statements, flags, location)

def initialize: (keyword_loc: Location, predicate: Node, statements: Node?, flags: Integer, location: Location) -> void 
def initialize(keyword_loc, predicate, statements, flags, location)
  @keyword_loc = keyword_loc
  @predicate = predicate
  @statements = statements
  @flags = flags
  @location = location
end