Regex in 'Oem extension object'

Hi,

I've noticed that the first regular expression "[A-Za-z0-9_.:]+" in the "Oem extension object" (specified in Resource.json and Resource_v1.xml schemas) matches more or less everything including odata and Redfish properties too.
This makes it impossible to add for instance an @odata.type property because it's value is not an object but a string (URL, #Namespace.TypeName ). 

Is it intentional? 

I presume it's not because the "Oem extension object" contains another Regex "^([a-zA-Z_][a-zA-Z0-9_]*)?@(odata|Redfish|Message)\\.[a-zA-Z_][a-zA-Z0-9_.]+$" specifically for odata and Redfish properties.

Here is the definition of the "Oem extension object" from the Resource.json

"Oem": {
    "additionalProperties": true,
    "description": "Oem extension object.",
    "longDescription": "This object represents the Oem properties. All values for resources described by this schema shall comply to the requirements as described in the Redfish specification.",
    "patternProperties": {
        "[A-Za-z0-9_.:]+": {
            "$ref": "http://redfish.dmtf.org/schemas/v1/Resource.json#/definitions/OemObject"
        },
        "^([a-zA-Z_][a-zA-Z0-9_]*)?@(odata|Redfish|Message)\\.[a-zA-Z_][a-zA-Z0-9_.]+$": {
            "description": "This property shall specify a valid odata or Redfish property.",
            "type": [
                        "array",
                        "boolean",
                        "integer",
                        "number",                           
                        "null",
                        "object",
                        "string"
                       ]
            }
    },
    "properties": {},
    "type": "object"
},

I think the first regular expression should look like this "^[A-Za-z0-9_.:]+$" to match the beginning and the end of a string. So it won't match @odata.type and etc... 

What do you think?

Thanks in advance,
Greg