https://dev.mysql.com/doc/dev/mysql-server/latest/classgis_1_1Geographic__geometrycollection.html
MySQL: gis::Geographic_geometrycollection Class Reference
mysqlgisgeographicclassreference
https://dev.mysql.com/doc/refman/9.7/en/gis-class-geometrycollection.html
MySQL :: MySQL 9.7 Reference Manual :: 13.4.2.8 GeometryCollection Class
reference manualmysql
https://access.redhat.com/webassets/avalon/d/red_hat_build_of_eclipse_vert.x/4.0.3/vertx_javadocs/io/vertx/mysqlclient/data/spatial/GeometryCollection.html
GeometryCollection (Vertx Javadocs 4.0.3.GA API)
vertxjavadocsgaapi
https://dev.mysql.com/doc/refman/9.7/en/gis-geometrycollection-property-functions.html
MySQL :: MySQL 9.7 Reference Manual :: 14.16.7.5 GeometryCollection Property Functions
reference manualmysql