returns the optional step type , possibly null . concode_field_sep int sequenceNumber concode_elem_sep String file concode_elem_sep long size concode_elem_sep AtomicInteger SEQUENCE concode_elem_sep StepType type concode_field_sep long getSize concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep int compareTo concode_elem_sep String getFile
StepType function ( ) { return type ; }