/**
 * PlayerInteractEvent is fired when a player interacts in some way.
 * All subclasses are fired on {@link MinecraftForge#EVENT_BUS}.
 * See the individual documentation on each subevent for more details.
 *
 * Minecraft's right click interaction is structured clientside as a "stream", where a stream of interactions are
 * all attempted until one of them succeeds.
 * This stream, in general, flows in this order for all hands, until one succeeds:
 * ((EntityInteractSpecific -> EntityInteract) OR (RightClickBlock)) -> (RightClickItem OR RightClickEmpty) -> repeat for other hands...
 *
 * The stream "flows", following a '->', whenever a respective event is cancelled or the underlying operation (as noted in each event)
 * returns some sort of status indicating that nothing happened (usually {@code false} or {@link net.minecraft.util.EnumActionResult#PASS}.
 * If the underlying operation performed some meaningful action then the stream is terminated and interaction ends.
 *
 * However, there may be situations where you need to terminate the stream, yet do not want the underlying operation to run.
 * This is what the {@link #externalResult} field is for.
 * If this field is {@link EnumActionResult#PASS}, then the underlying operation is called and its results used to continue processing.
 * However, if this field is not {@link EnumActionResult#PASS}, then the underlying operation is skipped and this field is directly used to continue processing.
 *
 * Unlike the client, the server side has no such "stream", as everything is done in the handlers of discrete packets.
 * As such, canceling an event server side simply causes the resulting interactions to not occur.
 **/