Which method signature is used in the Global API's?

 The method signature that is used in the Global API’s is ccrz.cc_Output (ccrz.cc_Input input). This signature indicates that the Global API methods take a single input parameter of type ccrz.cc_Input and return an output of type ccrz.cc_Output. These are custom classes that are defined in the cloudcraze managed package and contain various properties and methods for handling the input and output data. For example, ccrz.ccServiceProduct.getProducts(ccrz.cc_Input input) is a Global API method that takes an input object and returns an output object containing product data. Salesforce References: B2B Commerce and D2C Commerce Developer Guide, API Classes, cc_Input Class, cc_Output Class