The setup-type-by-extension function configures the filter to recognize file name extensions. It must be called before the assign-type-by-extension function can be used. The file specified as a property must contain mappings between standard MIME content types and file extension strings.
Name of the MIME types configuration file
Setup fn=setup-type-by-extension
file="/var/opt/SUNWportal/searchservers/search1/config/mime.types"