This extension helps you with autocomplete of rfc 7643 schema. It supports all the core attributes.
Open the command palette and type Generate Custom Schema. You will be prompted to enter an schema name. Enter the name and press enter. Then you will be promted to enter the schema type. Enter the type and press enter.
imsType to get the ims type schema.
photosValue to get the photos schema.
NOTE: To get schema of any complex attribute use the attribute name and suffix it with the corresponding subAttribute.