Location Available:
    #A procedure to determine if a location is 'available'. 
    #To see if the location above it contains entities.
    #Like for beds / chairs
    type: procedure
    definitions: location
    script:
    - define cuboid <def[location]>|<def[location].above>
    - announce <def[cuboid].as_cuboid.list_entities.is_empty||Invalid_Cuboid>
    - if <def[cuboid].list_entities.is_empty> determine true
    - determine false