code: public static String[] techniquesToStringArray(Set<ExperimentalTechnique> experimentalTechniques) {
  		if(experimentalTechniques==null){
  			return new String[0];
  		}
  		String[] outArray = new String[experimentalTechniques.size()];
  		int index = 0;
  		for (ExperimentalTechnique experimentalTechnique : experimentalTechniques) {
  			outArray[index] = experimentalTechnique.getName();
  			index++;
  		}
  		return outArray;
  	}
docs: Converts the set of experimental techniques to an array of strings.
  @param experimentalTechniques the input set of experimental techniques
  @return the array of strings describing the methods used.