CustomElement name when display = 'side'

[lamylio]

Hello,

My issue is that both the source and the replacement text for a CustomElement are defined by the property name, therefore I cannot use a CustomElement with display='side' and an arbitrary name. For example, if I want to have a CustomPDFElement.jsx that is displayed to the side that would replace the word 'source' from a Message(), this is currently impossible (AFAIK).

Describe the solution you'd like
I'd like to use another field, such as element, source, element_name on the constructor of CustomElement, and keep the behavior of the property name the same as all the built-in elements. ie, allowing this

await Message(
    content="Blabla, blaba.\n Click here to see the source",
    elements=[
        CustomElement(
            element="CustomPDFElement", # any other field name you'll consider better
            name="source",
            props={...},
            display = "side"
        )
    ],
).send()