5: Create BasePlugin and Issue

src/main/java/com/bartek/esa/core/archetype/BasePlugin.java

@@ -0,0 +1,34 @@
+package com.bartek.esa.core.archetype;
+
+import com.bartek.esa.core.model.Issue;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class BasePlugin {
+    private List<Issue> issues = new ArrayList<>();
+    private File file;
+
+    public void update(File file) {
+        this.file = file;
+    }
+
+    public List<Issue> runForIssues() {
+        run(file);
+        return issues;
+    }
+
+    protected abstract void run(File file);
+
+    protected void addIssue(int lineNumber, String line) {
+        Issue issue = Issue.builder()
+                .issuer(this.getClass())
+                .file(file)
+                .lineNumber(lineNumber)
+                .line(line)
+                .build();
+
+        issues.add(issue);
+    }
+}

src/main/java/com/bartek/esa/core/model/Issue.java

@@ -0,0 +1,15 @@
+package com.bartek.esa.core.model;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.io.File;
+
+@Data
+@Builder
+public class Issue {
+    private final Class<?> issuer;
+    private final File file;
+    private final int lineNumber;
+    private final String line;
+}