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: node_ext.rb
    path of file: ./repos/ruby/lib/prism
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Here we are reopening the
    
    def full_name_parts
      parts =
        case parent
        when ConstantPathNode, ConstantReadNode
          parent.full_name_parts
        when nil
          [:""]
        else
          # e.g. self::Foo, (var)::Bar = baz
          raise ConstantPathNode::DynamicPartsInConstantPathError, "Constant target path contains dynamic parts. Cannot compute full name"
        end