It was one of the first implementations of a framework using Python type hints to declare parameters and requests that I ever saw (before NestJS and Molten). I found it more or less at the same time as Hug. But APIStar used the OpenAPI standard.

//
// Some invariants to keep in mind: each declared Named type has a single
// corresponding object, and that object's type is the (possibly generic) Named
// type. Declared Named types are identical if and only if their pointers are
// identical. On the other hand, multiple instantiated Named types may be
// identical even though their pointers are not identical. One has to use

                                                int64_t zero_point);

// Extracts min and max values from the DenseFPElementsAttr, and stores them
// into `mins` and `maxs`. When mins and maxs are extracted per-channel,
// `dim_size` is number of channels and `slice_size` is the size of slice per
// each channel. When `symmetric` is true, the range is expanded to [-M, M].

	// ones. White and grey objects may depend on white and black objects.
	// A dependency on a grey object indicates a cycle which may or may not be
	// valid.
	//
	// When objects turn grey, they are pushed on the object path (a stack);
	// they are popped again when they turn black. Thus, if a grey object (a
	// cycle) is encountered, it is on the object path, and all the objects

	//   x ≡ y    attempt to unify types x and y
	//   p ➞ y    type parameter p is set to type y (p is inferred to be y)
	//   p ⇄ q    type parameters p and q match (p is inferred to be q and vice versa)
	//   x ≢ y    types x and y cannot be unified
	//   [p, q, ...] ➞ [x, y, ...]    mapping from type parameters to types
	traceInference = false
)

// A unifier maintains a list of type parameters and

	//   x ≡ y    attempt to unify types x and y
	//   p ➞ y    type parameter p is set to type y (p is inferred to be y)
	//   p ⇄ q    type parameters p and q match (p is inferred to be q and vice versa)
	//   x ≢ y    types x and y cannot be unified
	//   [p, q, ...] ➞ [x, y, ...]    mapping from type parameters to types
	traceInference = false
)

// A unifier maintains a list of type parameters and

	// ones. White and grey objects may depend on white and black objects.
	// A dependency on a grey object indicates a cycle which may or may not be
	// valid.
	//
	// When objects turn grey, they are pushed on the object path (a stack);
	// they are popped again when they turn black. Thus, if a grey object (a
	// cycle) is encountered, it is on the object path, and all the objects

		// If the trim path is not configured, try to guess it heuristically:
		// search for basename of each search path in the original path and, if
		// found, strip everything up to and including the basename. So, for
		// example, given original path "/some/remote/path/my-project/foo/bar.c"
		// and search path "/my/local/path/my-project" the heuristic will return
		// "/my/local/path/my-project/foo/bar.c".

}

// These routines end in 'ln', do not take a format string,
// always add spaces between operands, and add a newline
// after the last operand.

// Fprintln formats using the default formats for its operands and writes to w.
// Spaces are always added between operands and a newline is appended.
// It returns the number of bytes written and any write error encountered.
func Fprintln(w io.Writer, a ...any) (n int, err error) {
	p := newPrinter()

	// number of active watch request(s) in flight and during shutdown
	// it will wait, at most, for the specified duration and allow these
	// active watch requests to drain with some rate limiting in effect.
	// The default is zero, which implies the apiserver will not keep
	// track of active watch request(s) in flight and will not wait
	// for them to drain, this maintains backward compatibility.