question: returns the signing date time in millis for which the signature needs to be computed . concode_field_sep SignableRequest<?> request concode_elem_sep String formattedSigningDateTime concode_elem_sep String signingAlgorithm concode_elem_sep String scope concode_elem_sep String regionName concode_elem_sep String serviceName concode_elem_sep String formattedSigningDate concode_elem_sep long signingDateTimeMilli concode_field_sep SignableRequest<?> getRequest concode_elem_sep long getSigningDate concode_elem_sep String getFormattedSigningDateTime concode_elem_sep String getSigningAlgorithm concode_elem_sep String getServiceName concode_elem_sep String getFormattedSigningDate concode_elem_sep String generateScope concode_elem_sep String getRegionName concode_elem_sep String getScope
target: long function ( ) { return signingDateTimeMilli ; }