Combine Methods This pattern means several methods are
combined into one method. We find this pattern in the evolution
of Amazon API. Amazon MWS API is a data-intensive
API, there are a large amount of data need to be exchanged.
In the old version of this API, developers need to interact
with the server more than one times to get required data. But
after evolution, developers can acquire the data from only
one invocation. This decreases the latency in communication.
However, the migration for this change is hardly automatable,
since we need to find out possible consecutive invocations to
the involved methods and group them into one.