code: public static AnalysisEngineDescription createFixedExpressionSpotterAEDesc(ResourceConfig resourceConfig, Lang lang)  {
  		try {
  			AnalysisEngineDescription ae = AnalysisEngineFactory.createEngineDescription(
  					FixedExpressionSpotter.class,
  					FixedExpressionSpotter.FIXED_EXPRESSION_MAX_SIZE, 5,
  					FixedExpressionSpotter.REMOVE_WORD_ANNOTATIONS_FROM_CAS, false,
  					FixedExpressionSpotter.REMOVE_TERM_OCC_ANNOTATIONS_FROM_CAS, true
  				);
  			
  			ExternalResourceDescription fixedExprRes = ExternalResourceFactory.createExternalResourceDescription(
  					FixedExpressionResource.class, 
  					getResourceURL(resourceConfig, ResourceType.FIXED_EXPRESSIONS, lang));
  			
  			ExternalResourceFactory.bindResource(
  					ae,
  					FixedExpressionResource.FIXED_EXPRESSION_RESOURCE, 
  					fixedExprRes
  				);
  			
  			return ae;
  		} catch (Exception e) {
  			throw new PreparationPipelineException(e);
  		}
  	}
docs: Spots fixed expressions in the CAS an creates {@link FixedExpression}
  annotation whenever one is found.
  
  @return