code: public final FormComponentInterceptor getInterceptor( FormModel formModel ) {
          // if excludedFormModelIds have been specified, use this to check if the
          // form is excluded
          if( excludedFormModelIds != null && Arrays.asList(excludedFormModelIds).contains( formModel.getId() ) ) {
              return null;
          }
  
          // if includedFormModelIds have been specified, use this to check if the
          // form is included
          if( includedFormModelIds != null && !Arrays.asList( includedFormModelIds ).contains( formModel.getId() ) ) {
              return null;
          }
  
          // if we fall through, create an interceptor
          return createInterceptor( formModel );
      }
docs: Returns a <code>FormComponentInterceptor</code> for the given
  <code>FormModel</code>. Checks against the included and excluded
  <code>FormModel</code> ids.
  <p>
  If the excluded ids are specified and contain the given form model, returns
  <code>null</code>. <br>
  If the included ids are specified and don't contain the given form model, returns
  <code>null</code>. <br>
  
  @param formModel the <code>FormModel</code>
  @return a <code>FormComponentInterceptor</code> for the given
  <code>FormModel</code>