get
Returns a Supplier for a TermState for the given LeafReaderContext. This may return null if some cheap checks help figure out that this term doesn't exist in this leaf. The Supplier may then also return null if the term doesn't exist.
Calling this method typically schedules some I/O in the background, so it is recommended to retrieve Suppliers across all required terms first before calling Supplier.get on all Suppliers so that the I/O for these terms can be performed in parallel.
Return
a Supplier for a TermState.
Parameters
ctx
the LeafReaderContext to get the TermState for.