getTermPostingsEnum
Returns PostingsEnum for the specified field and term. This will return null if the field or term does not exist or positions were not indexed.
See also
.getTermPostingsEnum
Returns PostingsEnum for the specified field and term, with control over whether freqs, positions, offsets or payloads are required. Some codecs may be able to optimize their implementation when offsets and/or payloads are not required. This will return null if the field or term does not exist. See TermsEnum.postings.