Merge pull request #92 from janaganh/strbuilder

changed StringBuffer to StringBuilder - BugBash

Author: tsurdilo

diagram/src/main/java/io/serverlessworkflow/diagram/model/ModelStateDef.java

@@ -31,7 +31,7 @@ public ModelStateDef(String name, String type) {
 
     @Override
     public String toString() {
-        StringBuffer retBuff = new StringBuffer();
+        StringBuilder retBuff = new StringBuilder();
         retBuff.append(WorkflowDiagramUtils.stateDef)
                 .append(noSpaceName)
                 .append(WorkflowDiagramUtils.stateAsName)

diagram/src/main/java/io/serverlessworkflow/diagram/utils/WorkflowDiagramUtils.java

@@ -32,8 +32,8 @@ public class WorkflowDiagramUtils {
     public static final String description = " : ";
     public static final String title = "title ";
     public static final String footer = "center footer Serverless Workflow Specification - serverlessworkflow.io";
-    public static final String legendStart = new StringBuffer().append("legend top center").append(System.lineSeparator()).toString();
-    public static final String legendEnd = new StringBuffer().append(System.lineSeparator()).append("endlegend").toString();
+    public static final String legendStart = new StringBuilder().append("legend top center").append(System.lineSeparator()).toString();
+    public static final String legendEnd = new StringBuilder().append(System.lineSeparator()).append("endlegend").toString();
     public static final String stateDef = "state ";
     public static final String stateAsName = " as ";
     public static final String typeDefStart = " << ";