ifier rubyid_const_get'>const_get</span><span class='lparen'>(</span><span class='id identifier rubyid_constant'>constant</span><span class='comma'>,</span> <span class='kw'>false</span><span class='rparen'>)</span>
    <span class='kw'>end</span>
  <span class='kw'>end</span>
  <span class='id identifier rubyid_fail'>fail</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>No `model_field_namespace` implements ...::</span><span class