Remove Transaction#info: [ECR-3793]

This operation is no longer used by the framework.

Author: dmitry-timofeev

exonum-java-binding/core/src/main/java/com/exonum/binding/core/transaction/Transaction.java

@@ -16,6 +16,8 @@
 
 package com.exonum.binding.core.transaction;
 
+import com.exonum.core.messages.Runtime.ExecutionError;
+
 /**
  * An Exonum transaction.
  *
@@ -31,34 +33,15 @@ public interface Transaction {
    * @param context a transaction execution context, which allows to access the information about
    *        this transaction and modify the blockchain state through the included database fork
    * @throws TransactionExecutionException if the transaction cannot be executed normally
-   *     and has to be rolled back. The transaction will be committed as failed (status "error"),
-   *     the error code with the optional description will be saved into the storage. The client
-   *     can request the error code to know the reason of the failure
+   *     and has to be rolled back. The transaction will be committed as failed (error kind
+   *     {@linkplain com.exonum.core.messages.Runtime.ErrorKind#SERVICE SERVICE}),
+   *     the {@linkplain ExecutionError#getCode() error code} with the optional description
+   *     will be saved into the storage. The client can request the error code to know the reason
+   *     of the failure
    * @throws RuntimeException if an unexpected error occurs. A correct transaction implementation
    *     must not throw such exceptions. The transaction will be committed as failed
    *     (status "panic")
    */
   void execute(TransactionContext context) throws TransactionExecutionException;
 
-  /**
-   * Returns the information about this transaction in JSON format.
-   * For example, it is included in the blockchain explorer response to
-   * a <a href="https://exonum.com/doc/version/0.12/advanced/node-management/#transaction">
-   *   transaction</a> request as 'content.debug'.
-   *
-   * <p>By default, no information is provided. If needed, it can be easily implemented
-   * with {@linkplain com.exonum.binding.common.serialization.json.JsonSerializer Gson}:
-   *
-   * <pre><code>
-   *   &#64;Override
-   *   public String info() {
-   *     return JsonSerializer.json().toJson(this);
-   *   }
-   * </code></pre>
-   */
-  default String info() {
-    // Empty object by default
-    return "{}";
-  }
-
 }