src/main/java/com/itfsw/mybatis/generator/plugins/utils/enhanced/InnerInterface.java
@Override
    public String getFormattedContent(int indentLevel, CompilationUnit compilationUnit) {
        StringBuilder sb = new StringBuilder();

        for (String commentLine : getFileCommentLines()) {
            sb.append(commentLine);
            newLine(sb);
        }

        if (stringHasValue(getType().getPackageName())) {
            sb.append("package "); 
            sb.append(getType().getPackageName());
            sb.append(';');
            newLine(sb);
            newLine(sb);
        }

        for (String staticImport : getStaticImports()) {
            sb.append("import static "); 
            sb.append(staticImport);
            sb.append(';');
            newLine(sb);
        }

        if (getStaticImports().size() > 0) {
            newLine(sb);
        }

        Set<String> importStrings = calculateImports(getImportedTypes());
        for (String importString : importStrings) {
            sb.append(importString);
            newLine(sb);
        }

        if (importStrings.size() > 0) {
            newLine(sb);
        }

        addFormattedJavadoc(sb, indentLevel);
        addFormattedAnnotations(sb, indentLevel);

        OutputUtilities.javaIndent(sb, indentLevel);

        sb.append(getVisibility().getValue());

        if (isFinal()) {
            sb.append("final "); 
        }

        sb.append("interface "); 
        sb.append(getType().getShortName());

        if (getSuperInterfaceTypes().size() > 0) {
            sb.append(" extends "); 

            boolean comma = false;
            for (FullyQualifiedJavaType fqjt : getSuperInterfaceTypes()) {
                if (comma) {
                    sb.append(", "); 
                } else {
                    comma = true;
                }

                sb.append(JavaDomUtils.calculateTypeName(this, fqjt));
            }
        }

        sb.append(" {"); 
        indentLevel++;

        Iterator<Method> mtdIter = getMethods().iterator();
        while (mtdIter.hasNext()) {
            newLine(sb);
            Method method = mtdIter.next();
            sb.append(method.getFormattedContent(indentLevel, true, this));
            if (mtdIter.hasNext()) {
                newLine(sb);
            }
        }

        indentLevel--;
        newLine(sb);
        javaIndent(sb, indentLevel);
        sb.append('}');

        return sb.toString();
    }
@Override
    public String getFormattedContent(int indentLevel, CompilationUnit compilationUnit) {
        StringBuilder sb = new StringBuilder();

        for (String commentLine : getFileCommentLines()) {
            sb.append(commentLine);
            newLine(sb);
        }

        if (stringHasValue(getType().getPackageName())) {
            sb.append("package "); 
            sb.append(getType().getPackageName());
            sb.append(';');
            newLine(sb);
            newLine(sb);
        }

        for (String staticImport : getStaticImports()) {
            sb.append("import static "); 
            sb.append(staticImport);
            sb.append(';');
            newLine(sb);
        }

        if (getStaticImports().size() > 0) {
            newLine(sb);
        }

        Set<String> importStrings = calculateImports(getImportedTypes());
        for (String importString : importStrings) {
            sb.append(importString);
            newLine(sb);
        }

        if (importStrings.size() > 0) {
            newLine(sb);
        }

        addFormattedJavadoc(sb, indentLevel);
        addFormattedAnnotations(sb, indentLevel);

        OutputUtilities.javaIndent(sb, indentLevel);

        sb.append(getVisibility().getValue());

        if (isFinal()) {
            sb.append("final "); 
        }

        sb.append("interface "); 
        sb.append(getType().getShortName());

        if (getSuperInterfaceTypes().size() > 0) {
            sb.append(" extends "); 

            boolean comma = false;
            for (FullyQualifiedJavaType fqjt : getSuperInterfaceTypes()) {
                if (comma) {
                    sb.append(", "); 
                } else {
                    comma = true;
                }

                sb.append(JavaDomUtils.calculateTypeName(this, fqjt));
            }
        }

        sb.append(" {"); 
        indentLevel++;

        Iterator<Method> mtdIter = getMethods().iterator();
        while (mtdIter.hasNext()) {
            newLine(sb);
            Method method = mtdIter.next();
            sb.append(method.getFormattedContent(indentLevel, true, this));
            if (mtdIter.hasNext()) {
                newLine(sb);
            }
        }

        indentLevel--;
        newLine(sb);
        javaIndent(sb, indentLevel);
        sb.append('}');

        return sb.toString();
    }
格式化后内容，因为是内部接口，需要增加缩进

@param indentLevel the indent level
@param compilationUnit the compilation unit
@return the formatted content