docs: protected Map<String, Object> processVariablesFromAnnotations(MethodInvocation invocation) throws Throwable {
  
  		Map<ProcessVariable, Object> vars = this.mapOfAnnotationValues(ProcessVariable.class, invocation);
  
  		Map<String, Object> varNameToValueMap = new HashMap<String, Object>();
  		for (ProcessVariable processVariable : vars.keySet()) {
  			varNameToValueMap.put(processVariable.value(), vars.get(processVariable));
  		}
  		return varNameToValueMap;
  
  	}