def id_hash
      @terms.inject({}) {|sum, t| sum.update(t.id.value => t.name.value)}
    end
def id_hash
      @terms.inject({}) {|sum, t| sum.update(t.id.value => t.name.value)}
    end
Returns a hash of 'id:012345' => 'term label'

 @return [Hash] a hash of {id => string} for the file