$this->stream $this->stream call_user_func($this->_fn___toString) call_user_func($this->_fn_close) call_user_func($this->_fn_detach) call_user_func($this->_fn_eof) call_user_func($this->_fn_getContents) call_user_func($this->_fn_getMetadata, $key) call_user_func($this->_fn_getSize) call_user_func($this->_fn_isReadable) call_user_func($this->_fn_isSeekable) call_user_func($this->_fn_isWritable) call_user_func($this->_fn_read, $length) call_user_func($this->_fn_rewind) call_user_func($this->_fn_seek, $offset, $whence) call_user_func($this->_fn_tell) call_user_func($this->_fn_write, $string) $file $this->stream $this->stream MessageInterface MessageInterface MessageInterface MessageInterface MessageInterface array array $header $header $element['filename'] ?? null $uri $filename $filename $this->stream isset($this->headerNames['host']) assertMethod $normalizedFiles UploadedFileInterface[] $attribute $attribute $this->stream isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) isset($this->stream) $this->stream $this->stream $result '' === $relativePath throw $ex; $handle (bool) $rawOutput