question: called when a given source is about to become the active source . this gives subclasses the abilty to retrieve resources , if appropriate . concode_field_sep SourceEntry[] sources concode_elem_sep long size concode_elem_sep long lastByte concode_elem_sep int index concode_elem_sep RandomAccessSource source concode_elem_sep long firstByte concode_elem_sep SourceEntry currentSourceEntry concode_field_sep int getStartingSourceIndex concode_elem_sep void sourceReleased concode_elem_sep int get concode_elem_sep int get concode_elem_sep long length concode_elem_sep SourceEntry getSourceEntryForOffset concode_elem_sep void close concode_elem_sep long offsetN
target: void function ( RandomAccessSource arg0 ) { }