feat: recuperar uma unica sub conta

src/main/java/io/github/jpdev/asaassdk/rest/accounts/Account.java

@@ -31,6 +31,10 @@ public static AccountCreator creator() {
         return new AccountCreator();
     }
 
+    public static AccountFetcher fetcher(String id) {
+        return new AccountFetcher(id);
+    }
+
     public String getObject() {
         return object;
     }

src/main/java/io/github/jpdev/asaassdk/rest/accounts/AccountFetcher.java

@@ -0,0 +1,23 @@
+package io.github.jpdev.asaassdk.rest.accounts;
+
+import io.github.jpdev.asaassdk.http.Domain;
+import io.github.jpdev.asaassdk.rest.action.Fetcher;
+
+public class AccountFetcher extends Fetcher<Account> {
+
+    private final String id;
+
+    public AccountFetcher(String id) {
+        this.id = id;
+    }
+
+    @Override
+    public String getResourceUrl() {
+        return Domain.ACCOUNT.addPathVariable(this.id);
+    }
+
+    @Override
+    public Class<Account> getResourceClass() {
+        return Account.class;
+    }
+}