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: range.rb
    path of file: ./repos/gitlabhq/lib/gitlab/relative_positioning
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Gitlab
  module RelativePositioning
    class Range
      attr_reader :lhs, :rhs

      def open_on_left?
        lhs.nil?
      end

      def open_on_right?
        rhs.nil?
      end

      def cover?(
    
      def cover?(item_context)
        return false unless item_context
        return false unless item_context.positioned?
        return true if item_context.object == lhs&.object
        return true if item_context.object == rhs&.object

        pos = item_context.relative_position

        return lhs.relative_position < pos if open_on_right?
        return pos < rhs.relative_position if open_on_left?

        lhs.relative_position < pos && pos < rhs.relative_position
      end