def delete_state(node)
      # => Find the Node
      existing = find_state(node)
      return 'Node not present in state' unless existing
      # => Delete the Node from State
      state.delete(existing)
      # => Write Out the Updated State
      write_state
      # => Return the Deleted Node
      existing
    end
def delete_state(node)
      # => Find the Node
      existing = find_state(node)
      return 'Node not present in state' unless existing
      # => Delete the Node from State
      state.delete(existing)
      # => Write Out the Updated State
      write_state
      # => Return the Deleted Node
      existing
    end
=> Remove Node from the State