Revert "remove SNodePointer.getDebugText"

This reverts commit c4272f1d5fbf102db0711e68d9a9512f3fe90e79.
preparing SNodePointer for migration
preparing SNodePointer for migration: SNodeRef interface
preparing SNodePointer for migration: serialize/deserialize
preparing SNodePointer for migration: deprecate getNodeId
SNodeUtil: LinkDeclaration concept fq name added
SNodeUtil: code issues: no inline concept fqname