func (t *DeclType) IsList() bool {
	return t.KeyType == nil && t.ElemType != nil && t.Fields == nil
}

// IsMap returns whether the declaration is a 'map' type which defines parameterized key and
// element types, but not fields.
func (t *DeclType) IsMap() bool {
	return t.KeyType != nil && t.ElemType != nil && t.Fields == nil
}

    this?.takeIf { it.isNotEmpty() }
        ?.joinToString(separator = ", ", prefix = "<", postfix = ">", transform = transform)
        ?: ""


private
val ApiTypeUsage.isGroovyNamedArgumentMap
    get() = isMap && (
        typeArguments.all { it.isAny }
            || typeArguments.all { it.isStarProjectionTypeUsage }
            || (typeArguments[0].isString && (typeArguments[1].isStarProjectionTypeUsage || typeArguments[1].isAny))

func mapfn(name string, t *types.Type, isfat bool) ir.Node {
	if !t.IsMap() {
		base.Fatalf("mapfn %v", t)
	}
	if mapfast(t) == mapslow || isfat {
		return typecheck.LookupRuntime(name, t.Key(), t.Elem(), t.Key(), t.Elem())
	}
	return typecheck.LookupRuntime(name, t.Key(), t.Elem(), t.Elem())
}

func mapfndel(name string, t *types.Type) ir.Node {
	if !t.IsMap() {
		base.Fatalf("mapfn %v", t)
	}

		}
		// TODO: The case of deleting a list.list.node element is not currently supported.
		return fmt.Errorf("cannot delete path: unsupported parent.parent type %T for delete", nc.Parent.Parent.Node)
	case util.IsMap(nc.Parent.Node):
		return util.DeleteFromMap(nc.Parent.Node, nc.Parent.KeyToChild)
	default:
	}
	return fmt.Errorf("cannot delete path: unsupported parent type %T for delete", nc.Parent.Node)
}

}

// Equal returns true if the maps are of the same size, have the same keys, and the key-values
// from each map are equal.
func (m *MapValue) Equal(other ref.Val) ref.Val {
	oMap, isMap := other.(traits.Mapper)
	if !isMap {
		return types.MaybeNoSuchOverloadErr(other)
	}
	if m.Size() != oMap.Size() {
		return types.False
	}
	for name, field := range m.fieldMap {
		k := types.String(name)

		return types.MapType
	}
	return types.NewErr("type conversion error from '%s' to '%s'", t.Type(), typeValue.TypeName())
}

func (t *unstructuredMap) Equal(other ref.Val) ref.Val {
	oMap, isMap := other.(traits.Mapper)
	if !isMap {
		return types.MaybeNoSuchOverloadErr(other)
	}
	if t.Size() != oMap.Size() {
		return types.False
	}
	for key, value := range t.value {
		if propSchema, ok := t.propSchema(key); ok {

func tcClear(n *ir.UnaryExpr) ir.Node {
	n.X = Expr(n.X)
	n.X = DefaultLit(n.X, nil)
	l := n.X
	t := l.Type()
	if t == nil {
		n.SetType(nil)
		return n
	}

	switch {
	case t.IsMap(), t.IsSlice():
	default:
		base.Errorf("invalid operation: %v (argument must be a map or slice)", n)
		n.SetType(nil)
		return n
	}

	return n
}

// tcClose typechecks an OCLOSE node.

	if err != nil {
		log.Error(err.Error())
	}
}

// IsLeafNode reports whether the given node is a leaf, assuming internal nodes can only be maps or slices.
func IsLeafNode(node any) bool {
	return !util.IsMap(node) && !util.IsSlice(node)

		}
		finalVals := map[string]any{}
		// strip out anything from the original apiVals which are a map[string]any but populate other top-level fields
		for k, v := range apiVals {
			_, isMap := v.(map[string]any)
			if !isMap {
				finalVals[k] = v
			}
		}
		for k := range topLevelFields {
			if v, f := mergedVals[k]; f {
				finalVals[k] = v
			}
		}
		for k, v := range globals {

		fixedlit(inInitFunction, initKindLocalCode, n, var_, init)

	case ir.OSLICELIT:
		n := n.(*ir.CompLitExpr)
		slicelit(inInitFunction, n, var_, init)

	case ir.OMAPLIT:
		n := n.(*ir.CompLitExpr)
		if !t.IsMap() {
			base.Fatalf("anylit: not map")
		}
		maplit(n, var_, init)
	}
}

// oaslit handles special composite literal assignments.
// It returns true if n's effects have been added to init,