The details of the newly added sources. This is a convenience method that creates an instance of the
Source.Builder avoiding the need to create one
manually via Source.builder().
When the Consumer completes,
SdkBuilder.build() is called immediately and
its result is passed to #sources(List).
Parameters:
sources - a consumer that will call methods on
Source.Builder
Returns:
Returns a reference to this object so that method calls can be chained together.