Address some lint warnings

api/api.go

@@ -6,12 +6,14 @@ import (
 	"github.com/libp2p/go-libp2p-core/peer"
 )
 
+// Version provides various build-time information
 type Version struct {
 	Version string
 
 	// TODO: git commit / os / genesis cid?
 }
 
+// API is a low-level interface to the Filecoin network
 type API interface {
 	// chain
 
@@ -71,6 +73,9 @@ type API interface {
 
 	// // ID (on cli - print with other info)
 
+	// ID returns peerID of libp2p node backing this API
 	ID(context.Context) (peer.ID, error)
+
+	// Version provides information about API provider
 	Version(context.Context) (Version, error)
 }

api/struct.go

@@ -6,6 +6,7 @@ import (
 	"github.com/libp2p/go-libp2p-core/peer"
 )
 
+// Struct implements API passing calls to user-provided function values.
 type Struct struct {
 	Internal struct {
 		ID      func(context.Context) (peer.ID, error)
@@ -13,10 +14,12 @@ type Struct struct {
 	}
 }
 
+// ID implements API.ID
 func (c *Struct) ID(ctx context.Context) (peer.ID, error) {
 	return c.Internal.ID(ctx)
 }
 
+// Version implements API.Version
 func (c *Struct) Version(ctx context.Context) (Version, error) {
 	return c.Internal.Version(ctx)
 }

api/test/test.go

@@ -8,11 +8,14 @@ import (
 	"github.com/filecoin-project/go-lotus/build"
 )
 
+// APIBuilder is a function which is invoked in test suite to provide
+// test nodes and networks
 type APIBuilder func() api.API
 type testSuite struct {
 	makeNode APIBuilder
 }
 
+// TestApis is the entry point to API test suite
 func TestApis(t *testing.T, b APIBuilder) {
 	ts := testSuite{
 		makeNode: b,