Comment should end in a period

tools/perplexity/perplexity.go

@@ -11,50 +11,50 @@ import (
 	"github.com/tmc/langchaingo/tools"
 )
 
-// Model represents a Perplexity AI model type
+// Model represents a Perplexity AI model type.
 type Model string
 
 // Model pricing overview: https://docs.perplexity.ai/guides/pricing
 const (
-	// ModelLlamaSonarSmall is the small version of the Llama Sonar model
+	// ModelLlamaSonarSmall is the small version of the Llama Sonar model.
 	ModelLlamaSonarSmall Model = "llama-3.1-sonar-small-128k-online"
-	// ModelLlamaSonarLarge is the large version of the Llama Sonar model
+	// ModelLlamaSonarLarge is the large version of the Llama Sonar model.
 	ModelLlamaSonarLarge Model = "llama-3.1-sonar-large-128k-online"
-	// ModelLlamaSonarHuge is the huge version of the Llama Sonar model
+	// ModelLlamaSonarHuge is the huge version of the Llama Sonar model.
 	ModelLlamaSonarHuge Model = "llama-3.1-sonar-huge-128k-online"
 )
 
-// Option is a function that modifies the options for the Perplexity AI tool
+// Option is a function that modifies the options for the Perplexity AI tool.
 type Option func(*options)
 
 type options struct {
 	apiKey string
 	model  Model
 }
 
-// WithAPIKey sets the API key for Perplexity AI
+// WithAPIKey sets the API key for Perplexity AI.
 func WithAPIKey(apiKey string) Option {
 	return func(o *options) {
 		o.apiKey = apiKey
 	}
 }
 
-// WithModel sets the model to be used by Perplexity AI
+// WithModel sets the model to be used by Perplexity AI.
 func WithModel(model Model) Option {
 	return func(o *options) {
 		o.model = model
 	}
 }
 
-// Tool implements the Perplexity AI integration
+// Tool implements the Perplexity AI integration.
 type Tool struct {
 	llm              *openai.LLM
 	CallbacksHandler callbacks.Handler
 }
 
 var _ tools.Tool = (*Tool)(nil)
 
-// New creates a new instance of the Perplexity AI tool with the given options
+// New creates a new instance of the Perplexity AI tool with the given options.
 func New(opts ...Option) (*Tool, error) {
 	options := &options{
 		apiKey: os.Getenv("PERPLEXITY_API_KEY"),
@@ -83,17 +83,17 @@ func New(opts ...Option) (*Tool, error) {
 	}, nil
 }
 
-// Name returns the name of the tool
+// Name returns the name of the tool.
 func (t *Tool) Name() string {
 	return "PerplexityAI"
 }
 
-// Description returns a description of the Perplexity AI tool's capabilities
+// Description returns a description of the Perplexity AI tool's capabilities.
 func (t *Tool) Description() string {
 	return "Perplexity AI has access to a wide range of information, as it functions as an AI-powered search engine that indexes, analyzes, and summarizes content from across the internet."
 }
 
-// Call executes a query against the Perplexity AI model and returns the response
+// Call executes a query against the Perplexity AI model and returns the response.
 func (t *Tool) Call(ctx context.Context, input string) (string, error) {
 	if t.CallbacksHandler != nil {
 		t.CallbacksHandler.HandleToolStart(ctx, input)