check if the file extension is supported by the external utility concode_field_sep String FILEPLACEHOLDER concode_elem_sep HashMap<String,IDecompressor> internalSupport concode_elem_sep HashMap<String,String> externalSupport concode_elem_sep String PROPERTIES_PATH concode_field_sep InputStream startExternal concode_elem_sep String getExtension concode_elem_sep InputStream getDefault concode_elem_sep boolean isSupported concode_elem_sep boolean fileExists concode_elem_sep boolean isInternalSupported concode_elem_sep InputStream getInputStream concode_elem_sep void loadExternal
boolean function ( String arg0 ) { return externalSupport . containsKey ( arg0 ) ; }