A session tree branch mapping table.
A branch mapping table is a list of branch mappings assigned to a session tree branch.
To create a branch mapping table, obtain a new builder instance using newBranchMappingTableBuilder, call BranchMappingTableBuilder.addBranchMapping for each branch mapping, then BranchMappingTableBuilder.create. The result can then be sent to the server using SessionTrees.putBranchMappingTable.
the branch mappings
the branch of the session tree to which this table is bound