code: public void setQuerySpecDeserializer(QuerySpecDeserializer querySpecDeserializer) {
  		PreconditionUtil.assertNotNull("A query spec deserializer must be provided, but is null", querySpecDeserializer);
  		this.querySpecDeserializer = querySpecDeserializer;
  		this.queryParamsBuilder = null;
  	}
docs: Set the {@link QuerySpecDeserializer} to use to parse and handle query parameters.
  When invoked, overwrites previous {@link QueryParamsBuilder}s and QuerySpecDeserializers.
  
  @param querySpecDeserializer