question: return the frame length of this file format . concode_field_sep Type AIFF concode_elem_sep Type SND concode_elem_sep String extension concode_elem_sep Type WAVE concode_elem_sep Type AU concode_elem_sep String name concode_elem_sep int byteLength concode_elem_sep AudioFormat format concode_elem_sep int frameLength concode_elem_sep Type AIFC concode_elem_sep Type type concode_elem_sep Map<String,Object> properties concode_field_sep String getExtension concode_elem_sep int getByteLength concode_elem_sep Object getProperty concode_elem_sep Type getType concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String toString concode_elem_sep String toString concode_elem_sep AudioFormat getFormat concode_elem_sep Map<String,Object> properties
target: int function ( ) { return frameLength ; }