public GetObjectMetadataRequest withSSECustomerKey(SSECustomerKey sseKey) {
        setSSECustomerKey(sseKey);
        return this;
    }
Sets the optional customer-provided server-side encryption key to use
when retrieving the metadata of a server-side encrypted object, and
retuns the updated request object so that additional method calls can be
chained together.

@param sseKey
           The optional customer-provided server-side encryption key to
           use when retrieving the metadata of a server-side encrypted
           object.

@return This updated request object so that additional method calls can
        be chained together.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/GetObjectMetadataRequest.java