#1021 enforce Checkstyle rules in the build

role-object/src/main/java/com/iluwatar/roleobject/Customer.java

@@ -20,6 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 package com.iluwatar.roleobject;
 
 import java.util.Optional;
@@ -29,51 +30,52 @@ import java.util.Optional;
  */
 public abstract class Customer {
 
-    /**
-     * Add specific role @see {@link Role}
-     *
-     * @param role to add
-     * @return true if the operation has been successful otherwise false
-     */
-    public abstract boolean addRole(Role role);
+  /**
+   * Add specific role @see {@link Role}.
+   * @param role to add
+   * @return true if the operation has been successful otherwise false
+   */
+  public abstract boolean addRole(Role role);
 
-    /**
-     * Check specific role @see {@link Role}
-     *
-     * @param role to check
-     * @return true if the role exists otherwise false
-     */
+  /**
+   * Check specific role @see {@link Role}.
+   * @param role to check
+   * @return true if the role exists otherwise false
+   */
 
-    public abstract boolean hasRole(Role role);
+  public abstract boolean hasRole(Role role);
 
-    /**
-     * Remove specific role @see {@link Role}
-     *
-     * @param role to remove
-     * @return true if the operation has been successful otherwise false
-     */
-    public abstract boolean remRole(Role role);
+  /**
+   * Remove specific role @see {@link Role}.
+   * @param role to remove
+   * @return true if the operation has been successful otherwise false
+   */
+  public abstract boolean remRole(Role role);
 
-    /**
-     * Get specific instance associated with this role @see {@link Role}
-     *
-     * @param role         to get
-     * @param expectedRole instance class expected to get
-     * @return optional with value if the instance exists and corresponds expected class
-     */
-    public abstract <T extends Customer> Optional<T> getRole(Role role, Class<T> expectedRole);
+  /**
+   * Get specific instance associated with this role @see {@link Role}.
+   * @param role         to get
+   * @param expectedRole instance class expected to get
+   * @return optional with value if the instance exists and corresponds expected class
+   */
+  public abstract <T extends Customer> Optional<T> getRole(Role role, Class<T> expectedRole);
 
 
-    public static Customer newCustomer() {
-        return new CustomerCore();
-    }
-
-    public static Customer newCustomer(Role... role) {
-        Customer customer = newCustomer();
-        for (Role r : role) {
-            customer.addRole(r);
-        }
-        return customer;
+  public static Customer newCustomer() {
+    return new CustomerCore();
+  }
+
+  /**
+   * Create {@link Customer} with given roles.
+   * @param role roles
+   * @return Customer
+   */
+  public static Customer newCustomer(Role... role) {
+    Customer customer = newCustomer();
+    for (Role r : role) {
+      customer.addRole(r);
     }
+    return customer;
+  }
 
 }