By default, the
type property of the passed-in
source is used as the content type but can be overridden using
source is a Blob, be sure to specify a
filename in the
options. For File objects, the
filename falls back to “File#file”.
Note: This method does not perform the actual upload but returns a
FutureBinary. The actual upload can be triggered by putting the
FutureBinary into an
source(Blob or File) - Local data that can be uploaded to a
options(optional) (Object) - Options to pass when uploading a
filename(String) - The file name to use for the new
Binary; mandatory for blobs.
contentType(String) - A content type for overriding the type of the
ArgumentError- If the source is neither a Blob nor a File.
ArgumentError- If any of the passed-in
sourceis a “Blob” and no