How to use the coderedcms.models.page_models.CoderedPage function in coderedcms

landing_page_template = 'coderedcms/pages/form_page_landing.html'

    base_form_class = WagtailAdminFormPageForm

    form_builder = CoderedFormBuilder

    body_content_panels = [
        InlinePanel('form_fields', label="Form fields"),
    ] + \
        CoderedWebPage.body_content_panels + \
        CoderedFormMixin.body_content_panels + [
            FormSubmissionsPanel(),
            InlinePanel('confirmation_emails', label=_('Confirmation Emails'))
    ]

    settings_panels = CoderedPage.settings_panels + CoderedFormMixin.settings_panels

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        if not hasattr(self, 'landing_page_template'):
            name, ext = os.path.splitext(self.template)
            self.landing_page_template = name + '_landing' + ext

    def get_form_fields(self):
        """
        Form page expects `form_fields` to be declared.
        If you want to change backwards relation name,
        you need to override this method.
        """

        return self.form_fields.all()

Provides a body and body-related functionality.
    This is abstract so that subclasses can override the body StreamField.
    """
    class Meta:
        verbose_name = _('CodeRed Web Page')
        abstract = True

    template = 'coderedcms/pages/web_page.html'

    # Child pages should override based on what blocks they want in the body.
    # Default is LAYOUT_STREAMBLOCKS which is the fullest editor experience.
    body = StreamField(LAYOUT_STREAMBLOCKS, null=True, blank=True)

    # Search fields
    search_fields = (
        CoderedPage.search_fields +
        [index.SearchField('body')]
    )

    # Panels
    body_content_panels = [
        StreamFieldPanel('body'),
    ]

    @property
    def body_preview(self):
        """
        A shortened version of the body without HTML tags.
        """
        # add spaces between tags for legibility
        body = str(self.body).replace('>', '> ')
        # strip tags

def get_template(self, request, *args, **kwargs):
        """
        Override parent to serve different templates based on querystring.
        """
        if 'amp' in request.GET and hasattr(self, 'amp_template'):
            seo_settings = SeoSettings.for_site(request.site)
            if seo_settings.amp_pages:
                if request.is_ajax():
                    return self.ajax_template or self.amp_template
                return self.amp_template

        if self.custom_template:
            return self.custom_template

        return super(CoderedPage, self).get_template(request, args, kwargs)

paged_children = paginator.page(pagenum)
            except (PageNotAnInteger, EmptyPage, InvalidPage) as e:  # noqa
                paged_children = paginator.page(1)

            context['index_paginated'] = paged_children
            context['index_children'] = all_children
        context['content_walls'] = self.get_content_walls(check_child_setting=False)
        return context

###############################################################################
# Abstract pages providing pre-built common website functionality, suitable for subclassing.
# These are abstract so subclasses can override fields if desired.
###############################################################################


class CoderedWebPage(CoderedPage):
    """
    Provides a body and body-related functionality.
    This is abstract so that subclasses can override the body StreamField.
    """
    class Meta:
        verbose_name = _('CodeRed Web Page')
        abstract = True

    template = 'coderedcms/pages/web_page.html'

    # Child pages should override based on what blocks they want in the body.
    # Default is LAYOUT_STREAMBLOCKS which is the fullest editor experience.
    body = StreamField(LAYOUT_STREAMBLOCKS, null=True, blank=True)

    # Search fields
    search_fields = (