Method returnsthe tag value if the tag is present in the metadata tree, or null otherwise.

This method accesses the ComponentsConfiguration tag. The tag specifies information specific to compressed data. The channels of each component are arranged in order from the 1st component to the 4th. For uncompressed data, the data arrangement is given in the PhotometricInterpretation tag. However, since PhotometricInterpretation can only express the order of Y, Cb, and Cr, this tag is provided for cases when compressed data uses components other than Y, Cb, and Cr and to enable support of other sequences.