index.field.config_id=config_id
index.field.expires=expires
index.field.url=url
index.field.doc_id=doc_id
index.field.id=_id
index.field.version=_version
index.field.seq_no=_seq_no
index.field.primary_term=_primary_term
index.field.lang=lang
index.field.has_cache=has_cache
index.field.last_modified=last_modified
index.field.anchor=anchor
index.field.segment=segment
index.field.role=role
index.field.boost=boost

    /** The key of the configuration. e.g. _seq_no */
    String INDEX_FIELD_seq_no = "index.field.seq_no";

    /** The key of the configuration. e.g. _primary_term */
    String INDEX_FIELD_primary_term = "index.field.primary_term";

    /** The key of the configuration. e.g. lang */
    String INDEX_FIELD_LANG = "index.field.lang";

    /** The key of the configuration. e.g. has_cache */

        }

        public Long seqNo() {
            return seqNo;
        }

        public DocMeta primaryTerm(Long primaryTerm) {
            this.primaryTerm = primaryTerm;
            return this;
        }

        public Long primaryTerm() {
            return primaryTerm;
        }

        public DocMeta indexOption(RequestOptionCall<IndexRequestBuilder> builder) {

        }

        public Long seqNo() {
            return seqNo;
        }

        public DocMeta primaryTerm(Long primaryTerm) {
            this.primaryTerm = primaryTerm;
            return this;
        }

        public Long primaryTerm() {
            return primaryTerm;
        }

        public DocMeta indexOption(RequestOptionCall<IndexRequestBuilder> builder) {

            esEntity.asDocMeta().seqNo(seqNo);
        }
        final Long primaryTerm = esEntity.asDocMeta().primaryTerm();
        if (primaryTerm != null && primaryTerm.longValue() != SequenceNumbers.UNASSIGNED_PRIMARY_TERM) {
            esEntity.asDocMeta().primaryTerm(primaryTerm);
        }
        return builder;
    }

            esEntity.asDocMeta().seqNo(seqNo);
        }
        final Long primaryTerm = esEntity.asDocMeta().primaryTerm();
        if (primaryTerm != null && primaryTerm.longValue() != SequenceNumbers.UNASSIGNED_PRIMARY_TERM) {
            esEntity.asDocMeta().primaryTerm(primaryTerm);
        }
        return builder;
    }

type UnaryTerm struct {
	Negated *NegatedTerm `parser:"  @@"`
	Primary *PrimaryTerm `parser:"| @@"`
}

// NegatedTerm has a leading minus sign.
type NegatedTerm struct {
	Term *PrimaryTerm `parser:"\"-\" @@"`
}

// PrimaryTerm represents a Value, Path expression, a Sub-expression
// or a function call.
type PrimaryTerm struct {
	Value         *LitValue   `parser:"  @@"`

        }

        public Long seqNo() {
            return seqNo;
        }

        public DocMeta primaryTerm(Long primaryTerm) {
            this.primaryTerm = primaryTerm;
            return this;
        }

        public Long primaryTerm() {
            return primaryTerm;
        }

        public DocMeta indexOption(RequestOptionCall<IndexRequestBuilder> builder) {

            esEntity.asDocMeta().seqNo(seqNo);
        }
        final Long primaryTerm = esEntity.asDocMeta().primaryTerm();
        if (primaryTerm != null && primaryTerm.longValue() != SequenceNumbers.UNASSIGNED_PRIMARY_TERM) {
            esEntity.asDocMeta().primaryTerm(primaryTerm);
        }
        return builder;
    }

                    final Number primaryTerm = (Number) entity.remove(fessConfig.getIndexFieldPrimaryTerm());
                    if (seqNo != null && primaryTerm != null && oldId != null) {
                        searchEngineClient.delete(index, oldId, seqNo, primaryTerm);
                    }
                }

                searchEngineClient.store(index, entity);