query.gsa.index.field.content_type.=content_type
# Maximum concurrent group results for collapse queries.
query.collapse.max.concurrent.group.results=4
# Inner hits name for collapse queries.
query.collapse.inner.hits.name=similar_docs
# Inner hits size for collapse queries.
query.collapse.inner.hits.size=0
# Sorts for inner hits in collapse queries.
query.collapse.inner.hits.sorts=
# Default languages for queries.
query.default.languages=

    /** The key of the configuration. e.g. 4 */
    String QUERY_COLLAPSE_MAX_CONCURRENT_GROUP_RESULTS = "query.collapse.max.concurrent.group.results";

    /** The key of the configuration. e.g. similar_docs */
    String QUERY_COLLAPSE_INNER_HITS_NAME = "query.collapse.inner.hits.name";

    /** The key of the configuration. e.g. 0 */
    String QUERY_COLLAPSE_INNER_HITS_SIZE = "query.collapse.inner.hits.size";