You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: compute_helper.rb
    path of file: ./repos/powerstation/powerstation/IDE_plugin/out/production/resources/static-analyzer/controller_model_analysis
    
    the code of the file until where you have to start completion: def isAttrAssign(node)
	if node.getInstr.instance_of?AttrAssign_instr
		if node.getInstr.getFuncname.index('!') == nil
			return true
		end
	end
	return false  
end

def isTableAttrAssign(n)
	if n.getInstr.instance_of?AttrAssign_instr
		tbl_name = type_valid(n.getInstr, n.getInstr.getCaller)
		field_name = n.getInstr.getFuncna
    
def find_all_ancestors(nodex)
	@ancestors = Array.new
	@temp_node_list = Array.new
	@temp_node_list.push(nodex)
	while @temp_node_list.length > 0
		temp_node = @temp_node_list.shift
		@ancestors.push(temp_node)
		temp_node.getBackwardEdges.each do |e|
			if e.getFromNode != nil and @ancestors.include?(e.getFromNode) == false 
				if e.getFromNode.getInstr.instance_of?Return_instr and e.getFromNode.getInstr.getClassName == nodex.getInstr.getClassName and e.getFromNode.getInstr.getMethodName == nodex.getInstr.getMethodName
				elsif e.getFromNode.getIndex < nodex.getIndex
					@temp_node_list.push(e.getFromNode)
				end
			end