question: public static MimeType fromFileName ( final String fileName ) { final String inLowerCaseName = fileName . toLowerCase ( ) ; final String fileExtension = getFileExtension ( inLowerCaseName ) ; final MimeType mimeType = fileExtensions . get ( fileExtension ) ; if ( mimeType != null ) { return mimeType ; } return BINARY ; }
target:  This method returns the mime-type extrapolated from the file name.