how i templates inside t4 classblock method?

i'm starting inspect t4 formula generation.

i have simple template hide small chunks c#/vb perform cunning stuff...

<#@ template language="vb" debug="true" hostspecific="true" #>
<#@ cost extension=".vb" debug="true" hostspecific="true" #>
imports system
<#for any list twine new string(0 {"table1","table2"}#>
public category <#=table#>da
    open servant new
        <#= writeconstructorbody() #>
    finish servant 
end class
<#next#>
<#+
    open duty writeconstructorbody() string
        relapse "' comment"
    finish function
#>

this great.. however i means sure retard thus...

<#@ template language="vb" debug="true" hostspecific="true" #>
<#@ cost extension=".vb" debug="true" hostspecific="true" #>
imports system
<# 
for any basetablename twine new string(){"table1","table2"} 
    writerecdatainterface(basetablename) 
    writerecdataclass(basetablename) 
    writedainterface(basetablename) 
    writedaclass(basetablename) 
next 
#>

then i means have writex methods exist category retard nonetheless themselves writable controlling formula instance ie transient formula blocks.

how i grasp this?