pam_custom_empire_can_claim_kingdom_exclave_trigger

pam_custom_empire_can_claim_kingdom_exclave_trigger = {
	tier = tier_kingdom
	save_temporary_scope_as = kingdom_temp
    NOR = {
        $NEW_EMPEROR$ = {
            completely_controls = prev
        }
        holder ?= $NEW_EMPEROR$
        holder ?= {
            target_is_liege_or_above = $NEW_EMPEROR$
        }
    }
    NOT = {
    	any_de_jure_county = {
    		empire.title_capital_county ?= this
    	}
    }
    #Is not only kingdom in empire
    empire = {
    	any_direct_de_jure_vassal_title = {
    		tier = tier_kingdom
    		NOR = {
    			this = scope:kingdom_temp
    			$NEW_EMPEROR$ = {
        		    completely_controls = prev
        		}
        		holder ?= $NEW_EMPEROR$
        		holder ?= {
        		    target_is_liege_or_above = $NEW_EMPEROR$
        		}
    		}
    	}
    }
    #Is not controlled by de jure liege
   	trigger_if = {
   		limit = {
   			exists = empire.holder
   		}
   		empire.holder = {
   			NOR = {
   				this = scope:kingdom_temp.holder
   				any_vassal_or_below = {
   					this = scope:kingdom_temp.holder
   				}
   				completely_controls = scope:kingdom_temp
   			}
   		}
   	}
    #Not bordering any other county of de jure empire (not held by new empire)
    NOT = {
        any_de_jure_county = {
            save_temporary_scope_as = county_temp
            any_title_to_title_neighboring_and_across_water_county = {
                empire = scope:county_temp.empire
                kingdom = {
                    NOR = {
                        this = scope:county_temp.kingdom
                        $NEW_EMPEROR$ = {
                            completely_controls = prev
                        }
                        holder ?= {
                            target_is_same_character_or_above = $NEW_EMPEROR$
                        }
                    }
                }
            }
        }
    }
    any_de_jure_county = {
        any_neighboring_county = {
            kingdom = {
            	OR = {
            		holder ?= {
                		target_is_same_character_or_above = $NEW_EMPEROR$
                	}
                	$NEW_EMPEROR$ = {
                	    completely_controls = prev
                	}
                }
            }
        }
    }
}

As written in game/common/scripted_triggers/pam_scripted_triggers.txt.