//[docs](../../index.md)/[dev.inmo.tgbotapi.extensions.utils](index.md)/[onlyInvoiceContentMessages](only-invoice-content-messages.md) # onlyInvoiceContentMessages [common] Content fun <[ContentMessage](../dev.inmo.tgbotapi.types.message.abstracts/-content-message/index.md)<*>>.[onlyInvoiceContentMessages](only-invoice-content-messages.md)(): <[ContentMessage](../dev.inmo.tgbotapi.types.message.abstracts/-content-message/index.md)<[InvoiceContent](../dev.inmo.tgbotapi.types.message.payments/-invoice-content/index.md)>>