Function extractAttachments

extractAttachments(program: Program): ProgramAttachment[]
Decodes every attachment carried by a program.
Parameters
- program: Program
  Program to read.
Returns ProgramAttachment[]
One entry per attachment, each tagged with its message and position.
Example
```
for (const attachment of extractAttachments(request)) {
  console.log(attachment.kind, attachment.mimeType);
}
```