Initial commit: L10N_Europe packages

odoo-bringout-oca-ocb-l10n_es_edi_sii/doc/MODELS.md

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+# Models
+
+Detected core models and extensions in l10n_es_edi_sii.
+
+```mermaid
+classDiagram
+    class account_tax
+    class account_tax_template
+    class l10n_es_edi_certificate
+    class l10n_es_sii_account_tax_mixin
+    class account_edi_format
+    class account_move
+    class mail_template
+    class res_company
+    class res_config_settings
+```
+
+Notes
+- Classes show model technical names; fields omitted for brevity.
+- Items listed under _inherit are extensions of existing models.