create openapi docs for scm-git-plugin

scm-core/src/main/java/sonia/scm/api/v2/resources/ErrorDto.java

@@ -0,0 +1,32 @@
+package sonia.scm.api.v2.resources;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import lombok.Getter;
+import lombok.Setter;
+import sonia.scm.ContextEntry;
+
+import javax.xml.bind.annotation.XmlElementWrapper;
+import javax.xml.bind.annotation.XmlRootElement;
+import java.util.List;
+
+@Getter @Setter
+public class ErrorDto {
+  private String transactionId;
+  private String errorCode;
+  private List<ContextEntry> context;
+  private String message;
+
+  @JsonInclude(JsonInclude.Include.NON_NULL)
+  @XmlElementWrapper(name = "violations")
+  private List<ConstraintViolationDto> violations;
+
+  @JsonInclude(JsonInclude.Include.NON_NULL)
+  private String url;
+
+  @XmlRootElement(name = "violation")
+  @Getter @Setter
+  public static class ConstraintViolationDto {
+    private String path;
+    private String message;
+  }
+}