returns the list of all known file extensions of this media type . concode_field_sep long serialVersionUID concode_elem_sep String namespaceURI concode_elem_sep int minLength concode_elem_sep String uti concode_elem_sep List<RootXML> rootXML concode_elem_sep String description concode_elem_sep MediaType type concode_elem_sep String acronym concode_elem_sep List<Magic> magics concode_elem_sep MimeType type concode_elem_sep long serialVersionUID concode_elem_sep List<String> extensions concode_elem_sep String localName concode_elem_sep List<URI> links concode_field_sep List<Magic> getMagics concode_elem_sep String getName concode_elem_sep List<URI> getLinks concode_elem_sep void setDescription concode_elem_sep String getUniformTypeIdentifier concode_elem_sep void addRootXML concode_elem_sep int compareTo concode_elem_sep String getDescription concode_elem_sep int hashCode concode_elem_sep void addExtension concode_elem_sep void addMagic concode_elem_sep String getExtension concode_elem_sep void setAcronym concode_elem_sep boolean matchesXML concode_elem_sep boolean isValid concode_elem_sep boolean isEmpty concode_elem_sep void setUniformTypeIdentifier concode_elem_sep boolean hasMagic concode_elem_sep boolean matches concode_elem_sep boolean matches concode_elem_sep int getMinLength concode_elem_sep String getLocalName concode_elem_sep MediaType getType concode_elem_sep MimeType getType concode_elem_sep boolean equals concode_elem_sep String getAcronym concode_elem_sep boolean matchesMagic concode_elem_sep String toString concode_elem_sep String toString concode_elem_sep void addLink concode_elem_sep boolean hasRootXML concode_elem_sep String getNameSpaceURI
List < String > function ( ) { if ( extensions != null ) { return Collections . unmodifiableList ( extensions ) ; } else { return Collections . emptyList ( ) ; } }