Method is

paper-api/src/main/java/io/papermc/paper/entity/poi/PoiType.java:27–27

Determines whether the provided BlockState is relevant to this point of interest. @param data the BlockData to check @return true if the BlockState is relevant, otherwise false

(BlockData data)

     * @return {@code true} if the BlockState is relevant, otherwise {@code false}
     */
    boolean is(BlockData data);

    /**
     * Determines whether this PoiType can actually hold occupants.