I have upgraded @metaplex-foundation/mpl-token-metadata to the latest version today (version = 2.2.3). But I cannot find MetadataProgram.PREFIX any more, I know it's just a string metadata, but it would great if we can still keep using it as a constant. Anyone has any idea about it? Any comment would be appreciated.

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Currently,If you have to interact with any of the MPL program you can either use the low level SDK's which are now auto generated using Solita or you can use the JS SDK which is a high level SDK.

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