the serial number that uniquely identifies the mfa device . for virtual mfa devices , the serial number is the device arn . concode_field_sep java.util.Date enableDate concode_elem_sep String serialNumber concode_elem_sep String userName concode_field_sep String getSerialNumber concode_elem_sep void setSerialNumber concode_elem_sep void setEnableDate concode_elem_sep void setUserName concode_elem_sep MFADevice withUserName concode_elem_sep java.util.Date getEnableDate concode_elem_sep int hashCode concode_elem_sep MFADevice withEnableDate concode_elem_sep boolean equals concode_elem_sep MFADevice clone concode_elem_sep String getUserName concode_elem_sep String toString
MFADevice function ( String arg0 ) { setSerialNumber ( arg0 ) ; return this ; }