/**
* Check if two players can attack each other at the given location.
*
* @Param attacker The attacker
* @Param target The defender
* @Param location Location of the fight
* @Param setCombatTag Should Lands set a combat tag at these two players, if they are allowed to fight at the given location?
* Depending on the servers configuration this will result in players beeing allowed to fight for a configured period, even if they move into a safe claim.
* This prevents players running away into their claim to escape a fight, which they have started.
* @Param sendMessage Should Lands send a deny message if result is false?
* @Return This will return true, if the world is not a Lands world or the players are allowed to fight at the given location.
*/
boolean canPvP( @NotNull Player attacker, @NotNull Player target, @NotNull Location location, boolean setCombatTag, boolean sendMessage);​