question: get the system identifier for this input source . the getencoding method will return the character encoding of the object pointed to , or null if unknown . if the system id is a url , it will be fully resolved . concode_field_sep String systemId concode_elem_sep Reader characterStream concode_elem_sep InputStream byteStream concode_elem_sep String encoding concode_elem_sep String publicId concode_field_sep InputStream getByteStream concode_elem_sep String getEncoding concode_elem_sep void setCharacterStream concode_elem_sep void setEncoding concode_elem_sep void setSystemId concode_elem_sep void setByteStream concode_elem_sep void setPublicId concode_elem_sep Reader getCharacterStream concode_elem_sep String getPublicId
target: String function ( ) { return systemId ; }