func hasItemsConforming (to: [UTType]) -> Bool
Indicates whether at least one item conforms to at least one of the specified uniform type identifiers.
少なくとも1つの項目が少なくとも1つの指定のユニーム型識別子に準拠するかどうかを指し示します。
func hasItemsConforming (to: [String]) -> Bool
Returns whether at least one item conforms to at least one of the specified uniform type identifiers.
func itemProviders (for: [String]) -> [NSItemProvider ]
Returns an array of items that each conform to at least one of the specified uniform type identifiers.