Single Value Array about powershell-yaml HOT 7 CLOSED

PS /tmp/powershell-yaml> @("this is a test") | ConvertTo-Json                             
"this is a test"

PS /tmp/powershell-yaml> @("this is a test") | ConvertTo-Yaml                             
this is a test
...

PS /tmp/powershell-yaml> ConvertTo-Json @("this is a test")                               
[
    "this is a test"
]

PS /tmp/powershell-yaml> ConvertTo-Yaml @("this is a test")                               
- this is a test

PS /tmp/powershell-yaml> $obj = New-Object -TypeName System.Collections.Hashtable                                                                                                    
PS /tmp/powershell-yaml> $obj.Remove("myarray_attribute")                                                                                                                            
PS /tmp/powershell-yaml> $obj.myarray_attribute = New-Object -TypeName System.Collections.ArrayList                                                                                  
PS /tmp/powershell-yaml> $obj.myarray_attribute.Add("myarrayvalue")                                                                                                                  
0
PS /tmp/powershell-yaml>                                                                                                                                                             
PS /tmp/powershell-yaml> #Let's convert to JSON, it should show as Array                                                                                                             
PS /tmp/powershell-yaml> ConvertTo-Json $obj                                                                                                                                         
{
    "myarray_attribute":  [
                              "myarrayvalue"
                          ]
}
PS /tmp/powershell-yaml>                                                                                                                                                             
PS /tmp/powershell-yaml> #Now use one of these command below, attribute no longer an Array                                                                                           
PS /tmp/powershell-yaml> $obj | ConvertTo-Yaml                                                                                                                                       
myarray_attribute:
- myarrayvalue

PS /tmp/powershell-yaml> ConvertTo-Yaml $obj                                                                                                                                         
myarray_attribute:
- myarrayvalue

PS /tmp/powershell-yaml>                                                                                                                                                             
PS /tmp/powershell-yaml> #Let's check the JSON format again, it is now become string attribute                                                                                       
PS /tmp/powershell-yaml> ConvertTo-Json $obj`                                                                                                                                        
"System.Collections.Hashtable`"

PS /tmp/powershell-yaml> $obj                                                                                                                                                        

Name                           Value                                                                                                                                                
----                           -----                                                                                                                                                
myarray_attribute              {myarrayvalue}                                                                                                                                       


PS /tmp/powershell-yaml> $obj | ConvertTo-Yaml                                                                                                                                       
myarray_attribute:
- myarrayvalue

PS /tmp/powershell-yaml> $obj | ConvertTo-yaml| ConvertFrom-Yaml                                                                                                                     

Name                           Value                                                                                                                                                
----                           -----                                                                                                                                                
myarray_attribute              {myarrayvalue}