A variable-length array of bytes. The size of the array is specified by the Length field. The content of this field is based on the value of the FsInformationClass field, which determines the different structures that can be contained in the SetBuffer field. For a complete list of these structures, refer to [MS-FSCC] section 2.4. The "File information class" table defines all the possible values for the FsInformationClass field with the exception of the following values: FileDispositionInformation or FileRenameInformation.