Add missing javadoc and update parameter names and remove bp constructor

src/main/java/net/kemitix/gitdb/GitDBBranch.java

@@ -75,16 +75,18 @@ public interface GitDBBranch {
      * Begins a new anonymous transaction.
      *
      * @return a new Transaction
+     * @throws IOException error writing transaction branch
      */
     GitDBTransaction transaction() throws IOException;
 
     /**
      * Begins a new named transaction.
      *
-     * @param name the transaction name
+     * @param transactionName the transaction name
      * @return a new Transaction
+     * @throws IOException error writing transaction branch
      */
-    GitDBTransaction transaction(String name) throws IOException;
+    GitDBTransaction transaction(String transactionName) throws IOException;
 
     /**
      * Gets the name of the branch.

src/main/java/net/kemitix/gitdb/impl/GitDBBranchImpl.java

@@ -110,9 +110,9 @@ class GitDBBranchImpl implements GitDBBranch {
     }
 
     @Override
-    public GitDBTransaction transaction(String name) throws IOException {
+    public GitDBTransaction transaction(final String transactionName) throws IOException {
         final Ref ref = gitDBRepo.createBranch(branchRef, UUID.randomUUID().toString());
-        final GitDBBranch branch = new GitDBBranchImpl(ref, gitDBRepo, userName, userEmailAddress, name);
+        final GitDBBranch branch = new GitDBBranchImpl(ref, gitDBRepo, userName, userEmailAddress, transactionName);
         return new GitDBTransactionImpl(this, branch);
     }
 

src/main/java/net/kemitix/gitdb/impl/GitDBRepo.java

@@ -228,6 +228,14 @@ class GitDBRepo {
         return keyRemover.remove(branchRef, key);
     }
 
+    /**
+     * Create a new branch.
+     *
+     * @param branchRef the branch source
+     * @param name the name of the new branch
+     * @return the Ref of the new branch
+     * @throws IOException error writing the branch
+     */
     Ref createBranch(final Ref branchRef, final String name) throws IOException {
         return writeHead(branchRef.getName(), branchRef.getObjectId());
     }

src/main/java/net/kemitix/gitdb/impl/GitDBTransactionImpl.java

@@ -22,6 +22,7 @@
 package net.kemitix.gitdb.impl;
 
 import com.github.zafarkhaja.semver.Version;
+import lombok.RequiredArgsConstructor;
 import net.kemitix.gitdb.GitDBBranch;
 import net.kemitix.gitdb.GitDBTransaction;
 
@@ -33,28 +34,24 @@ import java.util.Optional;
  *
  * @author Paul Campbell (pcampbell@kemitix.net)
  */
+@RequiredArgsConstructor
 class GitDBTransactionImpl implements GitDBTransaction {
 
     private final GitDBBranch base;
     private final GitDBBranch branch;
 
-    GitDBTransactionImpl(final GitDBBranch base, final GitDBBranch branch) {
-        this.base = base;
-        this.branch = branch;
-    }
-
     @Override
-    public Optional<String> get(String key) throws IOException {
+    public Optional<String> get(final String key) throws IOException {
         return branch.get(key);
     }
 
     @Override
-    public GitDBBranch put(String key, String value) throws IOException {
+    public GitDBBranch put(final String key, final String value) throws IOException {
         return branch.put(key, value);
     }
 
     @Override
-    public GitDBBranch remove(String key) throws IOException {
+    public GitDBBranch remove(final String key) throws IOException {
         return branch.remove(key);
     }
 
@@ -69,8 +66,8 @@ class GitDBTransactionImpl implements GitDBTransaction {
     }
 
     @Override
-    public GitDBTransaction transaction(String name) throws IOException {
+    public GitDBTransaction transaction(final String transactionName) throws IOException {
-        return branch.transaction(name);
+        return branch.transaction(transactionName);
     }
 
     @Override