POJO mustache for SwaggerCodegen -> Java 8

pojo.mustache

{{>classJavadoc}}
{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{#additionalAnnotations}}
{{{additionalAnnotations}}}{{/additionalAnnotations}}
{{>generatedAnnotation}}
public class {{classname}} {{#parent}}extends {{{parent}}} {{/parent}} {

{{#vars}}
    {{#isEnum}}
        {{^isContainer}}
            {{>modelInnerEnum}}
        {{/isContainer}}
    {{/isEnum}}
    {{#items.isEnum}}
        {{#items}}
            {{^isContainer}}
                {{>modelInnerEnum}}
            {{/isContainer}}
        {{/items}}
    {{/items.isEnum}}
    {{>methodJavadoc}}
    {{>beanValidation}}
    {{#vendorExtensions.extraAnnotation}}
    {{{vendorExtensions.extraAnnotation}}}
    {{/vendorExtensions.extraAnnotation}}
    @javax.json.bind.annotation.JsonbProperty("{{baseName}}")
    {{#isContainer}}
    private {{{datatypeWithEnum}}} {{name}} = {{{defaultValue}}};
    {{/isContainer}}
    {{^isContainer}}
    private {{#required}}{{{datatypeWithEnum}}} {{name}}{{#required}} = {{{defaultValue}}}{{/required}};{{/required}}{{^required}}java.util.Optional<{{{datatypeWithEnum}}}> {{name}};{{/required}}
    {{/isContainer}}

{{/vars}}
{{#vars}}
    {{^isReadOnly}}
    public {{classname}} {{name}}({{{datatypeWithEnum}}} {{name}}) {
        this.{{name}} = {{#required}}{{name}}{{/required}}{{^required}}{{^isContainer}}java.util.Optional.of({{name}}){{/isContainer}}{{#isContainer}}{{name}}{{/isContainer}}{{/required}};
        return this;
    }
    {{#isListContainer}}

    public {{classname}} add{{nameInCamelCase}}Item({{{items.datatypeWithEnum}}} {{name}}Item) {
    {{^required}}
        if (this.{{name}} == null) {
        this.{{name}} = {{{defaultValue}}};
        }
    {{/required}}
        this.{{name}}.add({{name}}Item);
        return this;
    }
    {{/isListContainer}}
    {{#isMapContainer}}

    public {{classname}} put{{nameInCamelCase}}Item(String key, {{{items.datatypeWithEnum}}} {{name}}Item) {
    {{^required}}
        if (this.{{name}} == null) {
        this.{{name}} = {{{defaultValue}}};
        }
    {{/required}}
        this.{{name}}.put(key, {{name}}Item);
        return this;
    }
    {{/isMapContainer}}

    {{/isReadOnly}}
    
    public {{#required}}{{{datatypeWithEnum}}} {{#isBoolean}}is{{/isBoolean}}{{/required}}{{^required}}{{^isContainer}}java.util.Optional<{{{datatypeWithEnum}}}> {{/isContainer}}{{#isContainer}}{{{datatypeWithEnum}}} {{/isContainer}}{{#isBoolean}}is{{/isBoolean}}{{/required}}{{getter}}() {
        return {{name}};
    }
    {{^isReadOnly}}
    {{^isContainer}}   
    public void {{setter}}({{#required}}{{{datatypeWithEnum}}} {{/required}}{{^required}}java.util.Optional<{{{datatypeWithEnum}}}>{{/required}} {{name}}) {
        this.{{name}} = {{name}};
    }{{/isContainer}}{{#isContainer}}
        public void {{setter}}({{{datatypeWithEnum}}} {{name}}) {
        this.{{name}} = {{name}};
    }    
    {{/isContainer}}    
    {{/isReadOnly}}

{{/vars}}

    @Override
    public boolean equals(java.lang.Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
    }{{#hasVars}}
        {{classname}} {{classVarName}} = ({{classname}}) o;
        return {{#vars}}{{#isByteArray}}java.util.Arrays{{/isByteArray}}{{#isBinary}}java.util.Arrays{{/isBinary}}{{^isByteArray}}{{^isBinary}}java.util.Objects{{/isBinary}}{{/isByteArray}}.equals(this.{{name}}, {{classVarName}}.{{name}}){{#hasMore}} &&
        {{/hasMore}}{{/vars}}{{#parent}} &&
        super.equals(o){{/parent}};{{/hasVars}}{{^hasVars}}
        return {{#parent}}super.equals(o){{/parent}}{{^parent}}true{{/parent}};{{/hasVars}}
    }

    @Override
    public int hashCode() {
        return java.util.Objects.hash({{#vars}}{{^isByteArray}}{{^isBinary}}{{name}}{{/isBinary}}{{/isByteArray}}{{#isByteArray}}java.util.Arrays.hashCode({{name}}){{/isByteArray}}{{#isBinary}}java.util.Arrays.hashCode({{name}}){{/isBinary}}{{#hasMore}}, {{/hasMore}}{{/vars}}{{#parent}}{{#hasVars}}, {{/hasVars}}super.hashCode(){{/parent}});
    }


    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("class {{classname}} {\n");
        {{#parent}}sb.append("    ").append(toIndentedString(super.toString())).append("\n");{{/parent}}
        {{#vars}}sb.append("    {{name}}: ").append(toIndentedString({{name}})).append("\n");
        {{/vars}}sb.append("}");
        return sb.toString();
    }

    /**
     * Convert the given object to string with each line indented by 4 spaces
     * (except the first line).
     */
    private String toIndentedString(java.lang.Object o) {
        if (o == null) {
            return "null";
        }
        return o.toString().replace("\n", "\n    ");
    }
}