Find an endpoint defined implicitly through roxygen comments (rather than explicitly via writing porcelain_endpoint.
porcelain_package_endpoint(
  package,
  method,
  path,
  state = NULL,
  validate = NULL
)The name of the package to look in, provided as a string or as a namespace
The HTTP method (i.e., verb), such as GET or
POST, as a string
The path of the method (e.g., /my/path)
A list of state to bind into the method, if your endpoint requires any
Logical, indicating if the method should be created with schema validation enabled.
The endpoint, a porcelain_endpoint object