public ClientExecutionParams<Input, Output> withInput(Input input) {
        this.input = input;
        return this;
    }
Encapsulates parameters needed for a particular API call. Captures input and output pojo types.

@param <Input>  Input POJO type.
@param <Output> Output POJO type.
aws-java-sdk-core/src/main/java/com/amazonaws/client/ClientExecutionParams.java