How to create different form and tree in one class

<!-- model -->
class new_trial(models.Model):
    _name = "new.trial"
    _rec_name = 'xtrial_name'

    xtrial_name = fields.Char(string="Nama Trial", required=True)
    xtrial_abstarct = fields.Text(string="Abstract")
    xtrial_background = fields.Text(string="Background")
    xtrial_objective = fields.Text(string="Objective")
    xtrial_status = fields.Many2one('workflowstatus.trial',
        ondelete='set null', string="Status Trial", index=True)

<!-- xml -->
<odoo>
    <menuitem name="New Trial"
        id="menu_test_root"
        sequence="1"/>
    <menuitem id="menu_test_main" parent="menu_test_root" name="New Trial" sequence="1"/>

    <!--
        Here is the first view for the model 'client'.
        We don't specify a priority field, which means
        by default 16.
    -->
    <record model="ir.ui.view" id="client_form_view_1">
        <field name="name">client.form.view1</field>
        <field name="model">new.trial</field>
        <field name="type">form</field>
        <field name="arch" type="xml">
            <field name="xtrial_name"/>
            <field name="xtrial_status"/>
            <field name="xtrial_abstarct"/>
            <field name="xtrial_background"/>
            <field name="xtrial_objective"/>
        </field>
    </record>

    <record model="ir.ui.view" id="client_form_view_2">
        <field name="name">client.form.view2</field>
        <field name="model">new.trial</field>
        <field name="priority" eval="15"/>
        <field name="type">form</field>
        <field name="arch" type="xml">
            <field name="xtrial_status"/>
            <field name="xtrial_name"/>
        </field>
    </record>

    <record id="client_form_view_1_tree" model="ir.ui.view">
        <field name="name">client.form.view1 tree</field>
        <field name="model">new.trial</field>
        <field name="arch" type="xml">
            <tree string="client1" version="7.0" class="my_custom_class">
                <field name="xtrial_name"/>
                <field name="xtrial_status"/>
                <field name="xtrial_abstarct"/>
                <field name="xtrial_background"/>
                <field name="xtrial_objective"/>
            </tree>
        </field>
    </record>

    <record id="client_form_view_2_tree" model="ir.ui.view">
        <field name="name">client.form.view2 tree</field>
        <field name="model">new.trial</field>
        <field name="arch" type="xml">
            <tree string="client2" version="7.0" class="my_custom_class">
                <field name="xtrial_status"/>
                <field name="xtrial_name"/>
            </tree>
        </field>
    </record>


    <record id="client_form_view_1_filter" model="ir.ui.view">
        <field name="name">client.form.view1</field>
        <field name="model">new.trial</field>
        <field name="arch" type="xml">
            <search string="clientview1">
                <field name="xtrial_name"/>
                <field name="xtrial_status"/>
                <field name="xtrial_abstarct"/>
                <field name="xtrial_background"/>
                <field name="xtrial_objective"/>
            </search>
        </field>
    </record>

    <record id="client_form_view_2_filter" model="ir.ui.view">
        <field name="name">client.form.view2</field>
        <field name="model">new.trial</field>
        <field name="arch" type="xml">
            <search string="clientview2">
                <field name="xtrial_status"/>
                <field name="xtrial_name"/>
            </search>
        </field>
    </record>


    <record id="open_client_form_view1_trial" model="ir.actions.act_window">
        <field name="name">client.form.view1</field>
        <field name="res_model">new.trial</field>
        <field name="view_type">form</field>
        <field name="view_mode">tree,form</field>
        <field name="search_view_id" ref="client_form_view_1_filter"/>
        <field name="help" type="html">
          <p class="oe_view_nocontent_create">
                Click to create a Trial.
          </p>
        </field>
    </record>

    <record id="open_client_form_view2_trial" model="ir.actions.act_window">
        <field name="name">client.form.view2</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">new.trial</field>
        <field name="view_mode">tree,form</field>
            <field name="context">{}</field>
            <field name="domain">[]</field>
            <field name="view_ids" eval="[(5, 0, 0),
                (0, 0, {'view_mode': 'tree', 'view_id': ref('client_form_view_2_tree')}),
                (0, 0, {'view_mode': 'form', 'view_id': ref('client_form_view_2')})]"/>
            <field name="search_view_id" ref="client_form_view_2_filter"/>
            <field name="help" type="html">
            <p class="oe_view_nocontent_create">
                Click to create a client form view2.
            </p>
        </field>
    </record>

      <!-- / add record in sales order -->
       <menuitem action="open_client_form_view1_trial" id="menu_open_client_form_view1_trial" sequence="1" parent="menu_test_main"/>

       <menuitem action="open_client_form_view2_trial" id="menu_open_view_table_trial_list_my" sequence="2" parent="menu_test_main"/>
</odoo>