src/main/java/com/bytebybyte/google/geocoding/service/request/GeocodeRequestBuilder.java
public GeocodeRequestBuilder key(String client, String signature) {
		parameters.put("client", client);
		parameters.put("signature", signature);
		return this;
	}
public GeocodeRequestBuilder key(String client, String signature) {
		parameters.put("client", client);
		parameters.put("signature", signature);
		return this;
	}
Your 'business' application's API key. This key identifies your
application for purposes of quota management.

@param client
@param signature
@return GeocodeRequestBuilder