Example: Outgoing Rich Text content as Markdown
Let's say you want to retrieve the following Rich Text content as Markdown:

Set the value of richTextAs query parameter to markdown, and retrieve the document that contains it.
You should get the following in the richtext field response:
{
"type": "text/markdown",
"encoding": "PLAIN",
"content": "I AM OVERWRITING THIS! \nCan't do anything about it :P \nYou have no power here...\n"
}