question: return the number of rings in this collection . concode_field_sep List order concode_elem_sep Map pubRings concode_field_sep void encode concode_elem_sep boolean contains concode_elem_sep Iterator<PGPPublicKeyRing> iterator concode_elem_sep PGPPublicKeyRingCollection removePublicKeyRing concode_elem_sep Iterator<PGPPublicKeyRing> getKeyRings concode_elem_sep Iterator<PGPPublicKeyRing> getKeyRings concode_elem_sep Iterator<PGPPublicKeyRing> getKeyRings concode_elem_sep Iterator<PGPPublicKeyRing> getKeyRings concode_elem_sep byte[] getEncoded concode_elem_sep PGPPublicKey getPublicKey concode_elem_sep PGPPublicKeyRing getPublicKeyRing concode_elem_sep PGPPublicKeyRingCollection addPublicKeyRing
target: int function ( ) { return order . size ( ) ; }